I am adding your calculator with tutorials (will take some time to write them) for trigonometry and algebra on my website. I will probably need some help in using the calculator to solve trig problems (such as equations).You can visit the site here:http://freetutorials.name/Reference1/Trigonometry_tutorials.html#calculatorsIt is for high school and college students.Thank you for a nice calculator. It will probably be used by distance education and home school students.falcon(note: freetutorials is first page Google position # 1 [http://freetutorials.name]most students have problems with math. We try and help them."Cadet Career Counseling" helping cadets make exceptional students.